Scotopic Microperimetry in the Early Diagnosis of Age-Related Macular Degeneration: Preliminary Study

Table 1

Technical information of photopic and scotopic microperimetry (MP-1 and MP-1S).

Projection system	Internal LCD monitor.
Background luminance	Mesopic: 1.27 cd/m^2 (4 asb).; Scotopic: 0.0032 cd/m^2 (0.01 asb).
Stimuli dimensions; Stimuli patterns; Stimulus duration	Goldmann I, II, III, IV, and V.; Preset, manual, and customizable pattern sets.; From 40 to 2000 ms (user customizable).
Threshold strategies	4-2-1, 4-2, fast, raw, manual.
Fixation target	Single cross. Circle with “Fade-out Protection” option for MP-1S.; Four crosses. Possibility of custom fixation target.; Dimensions and colors user customizable in all targets.
Camera	Field of view: 45 degrees. Working distance: 47.1 mm from front lens to patient’s eye. Working distance mode: using Purkinje reflex. Minimum pupil diameter: 4 mm. 1/2′′ Infrared CCD camera, 768 × 576 pixel resolution. 1/2′′ Color CCD camera, 1392 × 1040 pixel resolution.